Water-saving toilet bowl

Abstract

The present invention is related to a water-saving toilet bowl wherein the main flush inlet and secondary flush inlets are improved whereby the secondary flush enters into the upper reservoir later than the main flush; and in addition, the guiding plate between the upper reservoir and lower reservoir is prolonged to increase the acceleration of gravity; having the features that no more than six liters of water is required to flush away the defecation or the like.

I claim: 
     
       1. A water-saving toilet bowl comprising: a bowl having an upper reservoir defined therein;   a flush-water inlet means mounted on said bowl;   a main flush inlet defined in said flush-water inlet means to conduct flush-water into said bowl, said main flush inlet being tapered in cross-section so that said inlet has one end narrow with respect to another end thereof, said flush inlet being oriented at an angle with respect to the wall of said bowl to conduct flush water toward the center of said bowl in a stream which does not contact the wall surface of said bowl adjacent said flush-water inlet means;   a weir positioned in said flush-water inlet means adjacent said main flush inlet narrow end;   a secondary flush means surrounding said bowl, said secondary flush means having a secondary flush passage with one end thereof being in fluid communication with said flush-water inlet means to receive flush-water therefrom, said weir extending across said secondary flush passage one end so that flush water must pass over said weir to enter said secondary flush passage, said secondary flush passage having another end thereof closed;   a plurality of secondary flush inlets defined in said secondary flush passage, each secondary flush inlet being declined in the same direction as said main flush inlet narrow end and being oriented to initiate a whirlpool along an inside surface of said bowl;   a lower reservoir defining means positioned beneath said bowl and defining a lower reservoir;   a water-passage defining means defining a water passage fluidly connecting said upper reservoir to said lower reservoir and including a guiding plate which is to be contacted by water as that water moves from said upper reservoir to said lower reservoir, and a water-passage wall;   a front plate connected at one end thereof to said water-passage wall and extending away from said water-passage wall over the surface of water contained in said upper reservoir, and having a free end presented toward said main flush inlet;   an air vent defined in an upper portion of said water-passage wall;   said weir delaying movement of flush water into said secondary flush passage so that a main flush enters said upper reservoir via said main flush inlet prior to initiation of a secondary flush via said secondary flush inlet means, said declined orientation of said secondary flush inlet means directing said secondary flush in the form of a whirlpool to mix with said main flush to flush waste through said water passage into said lower reservoir; and   disposal means connected to said lower reservoir for disposing of flush water from said lower reservoir.   
     
     
       2. A water-saving toilet according to claim 1 wherein said front plate free end is located at a point just below the surface of water of said reservoir. 
     
     
       3. A water-saving toilet bowl according to claim 1 wherein a guiding trough is defined in the bottom of said upper reservoir.